Sierra Bldg. Sonora Fairgrounds By Zib Hubbard Published Jul 12, 2017 07:15 am Loading Map.... Sierra Bldg. Sonora Fairgrounds220 Southgate Drive - SonoraEvents 37.9767397 -120.39024010000003 Address 220 Southgate Drive Sonora, CA / Tuolumne 95370 United States Upcoming Events No known events in this location